1. Department of Dermatology Venereology and Allergology University Medical Center of Schleswig‐Holstein Campus Kiel Kiel Germany
2. Department of Dermatology and National Center for Tumor Diseases University Medical Center Heidelberg Germany
3. Department of Dermatology University Medical Center Erlangen Germany
4. Department of Dermatology University Medical Center Mainz Germany
5. Department of Dermatology Venereology and Allergology University Medical Center Göttingen Germany
6. Department of Dermatology Venereology and Allergology University Medical Center Essen Germany
7. Department of Dermatology Venereology and Allergology Skin Cancer Center Hanover Medical School Hanover Germany